Use a 3D printed guide ( https://www.thingiverse.com/thing:81415 ) to put the X-axis rods back into the correct alignment. (When the X-axis home switch was failing, one side had been moved closer to that switch.)

Allen

June 23, 2017

Use Thermal Adhesive to put a re-purposed VGA Heatsink onto the end of the Extruder Stepper motor. (NO adhesive in the center, near the shaft end.)

Head NOT moving smothly again! Use Silicone Fluid to lube/clean all X/Y shafts.

Double-check that no end-cap screw is toooo thigh while doing this.

Allen

Jun 8-9, 2017

Extruder DIED! (Plate that the Tension Arm screws into is cracked/broken.)

Totally rebuild this using new printed parts.

Everything except the Bearing Cap and the Large Gear was reprinted (on Ultimaker 1)

Move Stepper Motor over as put Large Gear back on. (Gears were toooo tight.)

Allen

Jun 7, 2017

Lubricate the Z screw using Superlube Synthetic Grease.

Allen

June 6, 2017

Replaced the brass nozzle with a brand new one. Still underextruding though... whole head needs disassembly and new parts I think. Got a decent print at 40 mm/s, 220 deg, 110% flow, and nozzle size at 0.3mm

rana

June 1, 2017

Suspected the Translucent Yellow filament was aggravating the problems w/ this printer ... so changed the filament to a Pastel Pink roll, which is like the other rolls that have worked well. Now printer works fine @ 220°C & 110% Flow.

Tightened all the frame screws. Unwittingly tightened the tensioner screw on the rails (the middle screw of those plastic pieces on the frame) and the head would not move. Loosened them and head moves well now.

The plastic connector for the printhead fan was coming in between the head and the orange rail holder, preventing homing. Secured that wire using a zip tie.

Rana

April 26, 2017

Filament was not extruding, took out the Bowden tube in the printhead and put it back in, it went several mm further in. Extruding fine now.

Rana

April 19-20, 2017

Replacement of the print nozzle fan -- which had a broken blade.

Clean Print Nozzle

MacGyver Fix Extruder to keep pressure wheel against filament -- by using the head of a large (white) Tie Wrap to hold the top of the pivoting (black) section in position.

Do what can to level print bed. Print bed itself is not perfectly flat -- so large prints can have some spots tooo close (clicking extruder), and other spots too far (not sticking.)

The Print Head Fan Duct was touching the build plate before the front/right corner was down enough to be level. Used a fine file to trim the underside of this 3D printed part, so this now stays just slightly above the build plate at all times.

Allen

March 1, 2017

X axis just stopped working mid-print again. Re-seated x axis stepper board again, and this time used Kapton Tape to secure all the the stepper board DIPs in place.